{"id":"F2006B04573","name":"AD/BELL 212/41 - Pitch Change Link Universal","slug":"ad-bell-212-41-pitch-change-link-universal","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114303,"registerId":"commonwealth-F2006B04573-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 212/41 - Pitch Change Link Universal","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Bell Helicopter Textron 212 Series Helicopters\n\n \n\nAD/BELL 212/41 Pitch Change Link Universal 11/89\n\nDM\n\n \n\nApplicability: All models fitted with universals P/N 204-011-128-1 after 1 April 1989.\n\n \n\nRequirement: Carry out a one time inspection of the P/N 204-011-128-1 universal for staking marks around each bearing face. If the universal has 6 staking marks around each bearing remove from service and destroy universal.\n\n \n\nNote: Bell OSN 212-89-19 refers.\n\n \n\nCompliance: By 30 September 1989. Thereafter prior to installation.\n\n \n\nBackground: The U.S. Army has detected cracks, due to hydrogen embrittlement, around the staking marks used to retain bearings within the universal. This Directive is raised to ensure defective new universals are not fitted to civil aircraft.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2772},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope as a targeted safety measure addressing a specific manufacturing defect in Bell 212 helicopter components. It has not expanded beyond the technical inspection requirement for hydrogen embrittlement issues in pitch change link universals."},"complexity_factors":["Single mechanical component identified by specific part number (P/N 204-011-128-1)","Simple binary inspection criteria (presence of 6 staking marks)","No defined terms or interpretation sections","Minimal cross-referencing (only refers to Bell OSN 212-89-19)","Straightforward compliance action (visual inspection and removal if defective)"],"plain_english_summary":"This Airworthiness Directive requires a one‑time inspection of the pitch change link universal (P/N 204‑011‑128‑1) on Bell 212 helicopters to check staking marks around each bearing face. If a universal has six staking marks it must be removed and destroyed; fewer than six marks are acceptable.\n\nIt affects operators of Bell 212s with that part installed after April 1989, prompted by Army findings that six‑mark universals developed cracks from hydrogen embrittlement."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-41-pitch-change-link-universal","history":"/api/acts/ad-bell-212-41-pitch-change-link-universal/history","analysis":"/api/acts/ad-bell-212-41-pitch-change-link-universal/analysis","conflicts":"/api/acts/ad-bell-212-41-pitch-change-link-universal/conflicts","importantCases":"/api/acts/ad-bell-212-41-pitch-change-link-universal/important-cases","documents":"/api/acts/ad-bell-212-41-pitch-change-link-universal/documents"}}